code: def test_frozen(self):
      flags.FLAGS(
          [
              "keras_to_pb.py",
              "-i=%s" % self.model,
              "-o=%s" % self.output,
              "--frozen",
          ]
      )
      self.k2p._main(None)
  
file_path: auptimizer/tests/dlconvert/test_keras_to_pb.py
imports: import unittest
  from absl import flags
  from os import path, remove, environ
  import json
  from six import PY2
label_desc: Use image node_id 3 for calling the KerasToPBTestCase obj's underlying member method code with example usage: obj.test_frozen() without return types